Grain-separator.



G.- LOKKEN. GRAIN SEPARATOR. APPLICATION FILED JULY 17, 1911.

Patented July 23, 1912.

an f COLUMBIA PLANOOIAPI} 60., WASHINOION, D- 61 G. LOKKEN; GRAIN SBPARATOR. APPLICATION rum) JULY 17. 1911.

Patented July 23, 1912.

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N l FI COLUMBIA PLANOORAPH Cb WASHINGTON. n. c.

G. LOKK-EN. GRAIN SEPARA OR; APPLICATION FILED JULY 17, 1911.

Patented July 23, 19 12.

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ccLUlllA PLANOGRAPH 60., WASHINGTON. Dlc.

EIq-- G. LOKKEN.

GRAIN SEPARATOR.

APPLIOATION FILED JULY l7 1911.

Patented July 23, 1912.

4 SHEETSSHEET4.

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GUSTAV LOKKEN, OF BADGER, MINNESOTA.

GRAIN-SEPARATOR.

Specification'of Letters Patent.

Patented July 23, 1912.

Application filed July 17, 1911. Serial No. 638,890.

To all whom it may concern:;

Be it known that I, GUs'rAv LOKKEN, a citizen of the United States, residing at Badger, in the county of Roseau, State of Minnesota, have invented certain new and useful Improvements in Grain-Separators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to grain separators.

The object of the invention resides in the provision of a grain separator wherein an air blast and centrifugal force are utilized in combination to effect the separation of the grain and straw after the former has been hulled from the latter by the passage of the whole grain through the usual threshing cylinder.

With the above and other objects in view, the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings, wherein like characters of reference denote corresponding parts in the several views, and in which Figure 1, a side elevation of a grain separator constructed in accordance with the invention. Fig. 2, a view similar to Fig. 1 partly in section, Fig. 3, a plan view of the separator partly in section, Fig. 4, a section on the line 44 of Fig. 1, Fig. 5, a plan view of the centrifugal separating device with the upper portion of the casing and the centrifugal throwing plate thereof removed, certain parts of the separator disposed beneath the centrifugal separating device be-.

ing omitted for the sake of clearness, and Fig. 6, a detail view of the centrifugal throwing plate looking at the upper face thereof.

Referring to the drawings A indicates generally the wheeled frame of the separator and includes lower side members 10 and 11, upper side members 12 and 13, corner members 14 and 15 connecting the side members 10 and 12, corner members 16 and 17 connecting the side members 11 and 13, and upper end members 18 and 19 connecting the upper side members 12 and 13.

Mounted in the frame A adjacent one end thereof'is a cylinder casing 20 in which is disposed the usual toothed cylinder 21 .mounted upon a shaft 22, which latter is journaled in suitable brackets disposed on the upper side members 12 and 13. The usual feed board 23 is mounted upon the frame A in position to permit the grain to be manually fed to the cylinder 21. Mounted in the frame A forward of the cylinder 21 is a centrifugal separating device B which receives the grain from the cylinder.

This separating device comprises a pair of conical sections 24 and 25 which have their major ends provided with flanges 26 and 27 disposed in overlapping relation and contions 24 and 25 with the interior of a suction fan casing 30, which latter is mounted upon the frame A forward of the centrifugal separating device. This suction fan casing 30 is provided with a delivery mouth 31, which latter is connected with a stacker arm or spout 32 controlled from a Windlass 33 mounted on the frame A. Disposed within the suction fan casing 30 is a fan 34 which is fixed upon a shaft 35 journaled upon the frame A'and driven in a manner to be hereinafter referred to.

Leading from the cylinder casing 20 and extending through the wall of the section 24 is a spout 36 and carried upon thisspout is a conical casing 37 the side walls of which are disposed in parallel spaced relation to the wall of the section 24. The outer end of the spout 36 extends through the side wall of the casing 37 and is then directed downwardly so as to deliver through the bottom of said casing. Disposed within the section 25 is an inner conical section 38 the wall of which is disposed in spaced relation to the wall of the section 25. The walls of the sections 25 and 38 are cut away as at 39, 40 and 41 and the limiting edges of said sections along these cutaway portions are connected by strips 42 to form downwardly converging grain conveying channels 43, 44 and 45 which deliver to a transverse casing 46 supported from the section 25 and having disposed therein a conveyor screw 47 mounted upon a shaft 48. Fixed upon the upper end of the section 38 is a plate 49 having formed therein a plurality of openings 50.

Journaled centrally in the plate 49 is a vertical shaft 51 which carries on its lower end a pulley 52 and has fixed on its upper end in spaced relation to the plate 49 a centrifugal throwing plate 53. This plate 53 is provided on its upper face with a plurality of radially disposed ribs 54. It will be here noted that the center of the throwing plate 53 is disposed directly beneath the delivery end of the spout 36. Loosely mounted upon the shaft 51 beneath the plate 49 is a disk 55 provided with a plurality of openings 56 adapted when said disk is rotated to pass into and out of registration with the openings 50 in the plate 49. The rotation of the disk 55 is effected by a rod 57 having its inner end pivotally connected with said disk, said rod being slidably mounted in the sections 25 and 38. By the actuation of the disk 55 the suction created by the fan 34 may be controlled as will be obvious. Mounted upon the inner face of the wall of the section 24 is a baflie plate 58. This plate extends transversely of the section 24 and has its lower face disposed substantially in the same plane with the lower face of the casing 37. The casing 46 in which the conveyer screw 47 is disposed terminates at one end in a vertical extension 59 in which is located an endless conveyer 60 driven directly from the shaft 48. The upper end of the extension 59 isprovided with a laterally directed delivery mouth 61 which discharges into a sorting device forming a component part of the machine. This sorting device comprises a plurality of concentrically disposed screens 62 and 63 and an outer tubular shield also disposed concentrically to the screens 62 and 63 and in spaced relation to the latter. The screens 62 and 63 and the shield 64 are held in concentric relation by a suitable frame which is fixed upon a shaft 65 journaled transversely of the separator in suitable journal brackets 66 mounted upon the frame A.

Mounted on the frame A on opposite sides of the longitudinal axis of the sorting device previously referred to are conveyer casings 67 and 68. The lower end of the casing 67 terminates in an upwardly directed intake spout 68 and the free end of this spout terminates in a segmental gutter 69 positioned at the delivery end of the screen 62 so as to direct the discharge of said screen into the delivery spout 68 and thence to the conveyer contained in the casing 67. Likewise the conveyer casing 68 terminates in an upwardly directed intake spout 7 O and the free end of this spout terminates in a segmental gutter 71 positioned at the delivery end of the screen 63 so as to direct the discharge of said screen into the delivery spout and thence to the conveyer contained in the casing 68. Supported in the frame A is a vertical spout 72 the upper end of which terminates in a segmental gut-- ter 7 3 positioned at the delivery end of the shield 64 so as to direct the discharge of said shield into the spout 72 from whence it is delivered directly on the ground therebeneath or into a suitable receptacle positioned beneath the lower end of the spout 72. The conveyer casing 67 terminates at its upper end in a downwardly directed discharge spout 74, while the conveyer casing 68 also terminates in a downwardly directed discharge mouth 75 to which latter is connected a flexible spout 76 whereby the product delivered by the conveyer within the casing 68 may be directed to differentportions of the interior of a wagon positioned along side of the separator.

It will be noted that the mesh of the screen 62 is such as will permit the good grain and screenings delivered thereto from the mouth 61 of the conveyer casing 59 to pass readily therethrough, but which at the same time will prevent the passage of the tailings contained in said grain. These tailings will eventually be delivered into the gutter 69 and thence through the intake spout 69 to the conveyer contained in the casing 67 and finally discharged from the spout 74. The mesh of the screen 63 is smaller than the mesh of the screen 62 and while same will readily permit the passage of the screenings delivered thereto it will not permit the passage of the good grain, which latter is eventually delivered into the gutter 71, thence to the conveyer contained in the easing 68 and finally discharged from the spout 76 into the desired wagon.

The various driving connections of the separator are as follows: The shaft 22 of the cylinder 21 is extended at both ends and on one of these extensions is mounted a belt wheel 77 which is connected by a belt 78 with a suitable source of power such as a traction engine. Fixed on the last named extension of the shaft 22 on the inner side of the belt wheel 77 is a belt wheel 79. Fixed on the other extension of the shaft 22 are belt wheels 80, 81 and 82, the latter of which is operatively connected by a belt 84 with the upper shaft of the endless conveyer disposed in the casing 67, while the former belt wheel is operatively connected by a belt 85 with the upper shaft of the endless conveyer disposed in the casing 68. The end of the shaft 65 which carries the sorting device is extended at the end thereof adj acent the belt wheel 77 and mounted upon said extension of the shaft 65 in line with the belt wheel 79 on the shaft 22 is a belt wheel 86 and a belt 87 operatively connects said belt wheels 79 and 86. The extension of the shaft 65 also has fixed thereon at its extreme outer end a belt wheel 88 which is operatively connected by a belt 89 with a belt wheel 90 fixed on a counter shaft 91 suspended in journal brackets from the side members 10 and 11 of the frame A. Fixed on the countershaft 91 inward of the belt wheel 90 is another belt wheel 92 which is operatively connected by a belt 93 with a belt wheel 94 fixed on the adjacent end of the shaft 48, which latter carries the conveying screw 47 as previously referred to. The fan 34 is driven from the belt wheel 81 on the shaft 22 by means of a belt 95 traveling on the wheel 81 and on a belt wheel 96 fixed on the shaft 35. F iXed intermediately on the countershaft 91 is a pulley 97 which is operatively connected to the pulley 52 by a belt 98 so that the rotation of the countershaft 91 will efiect a corresponding rotation of the vertical shaft 51 and operate the centrifugal throwing plate 53.

From the foregoing description of the various connections it will be apparent that the actuation of the belt wheel 77 by the belt 78 will in turn effect the simultaneous operation of all the parts of the separator.

In order to separate the grain seed from the straw it is only necessary to feed same in a combined state to the cylinder 21 which operates to remove the seed from the straw. In this separated state the seed and straw is conveyed by the suction produced by the fan 34 through the spout 36 and delivered upon the centrifugal throwing plate 53. This plate operates to throw both the seed and straw laterally and owing to the difference in weight between the two the former will be projected beneath the baffle plate 58 into what may be termed a still or dead chamber, while the latter will be drawn by the suction created by the fan 34 into the space between the casing 37 and section 34, and thence through the pipe 29 to the fan casing 30 from where it is forced by the air blast through the stacker spout 32. The grain seed previously delivered beneath the baffle plate 58 falls by its own weight into the channels 43, 44 and 45 and is delivered therefrom to the casing 46 where it is acted upon by the screw 47 and fed to the conveyer 60. From this conveyer the grain seed is delivered into one end of the screen 62 from thence the good grain and screenings pass to the screen 63. The mesh of the screen 62 being too fine to permit the passage of the tailings they are eventually discharged into the gutter 69 and then delivered to the conveyer in the casing 67 to be finally discharged through the mouth or spout 74 into a suitable receptacle or wagon. The mesh of the screen 63 being too fine to permit the passage of the good grain, the latter will be eventually discharged into the gutter 71 from thence it is carried to the conveyer in the casing 68 and finally discharged through the spout 76 into a Wagon. The screenings pass through the screen 63 and are delivered to the shield 64 from thence they are discharged to the gutter 73 and then through the spout 72 to a suitable receptacle disposed beneath the latter.

WVhat is claimed is:

1. In a grain separator, the combination of a casing having a vertical annular passage formed therein, a centrifugal throwing plate mounted in said casing to project grain and straw transversely of said passage, means for operating said centrifugal throwing plate, an annular baffie' plate disposed within said passage above said centrifugal throwing plate and in spaced relation to the periphery of the latter, means for effecting an upwardly directed blast of air through said annular passage, means for delivering separated grain and straw upon said centrifugal throwing plate whereby said grain and straw are projected laterally and the latter carried upwardly through the passage under the influence of the air blast while the former passes beneath said baffle plate out of the path of said air blast, and means for discharging the grain projected beneath the .baflie plate through the bottom of the casing.

2. In a grain separator, the combination of a casing having a vertical passage formed therein, means for delivering separated grain and straw to said casing, centrifugally operated means for projecting said grain and straw transversely of the passage, a baffle plate disposed in said passage above the centrifugal means and in spaced relation to the outer limitations thereof, means for effecting an upward blast of air through the passage whereby the straw projected by said centrifugal means will be carried upwardly through the passage under the influence of the air blast and the grain passes beneath said baffle plate and out of the path of said air blast, and means for discharging the grain projected beneath the baffle plate through the bottom of the casing.

In testimony whereof, I aflix my signature, in presence of two witnesses.

GUSTAV LOKKEN.

Witnesses:

K. T. WANG, A. G. LOKKEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

